CN217708438U - Braking force variation trend monitoring device and elevator lever drum brake - Google Patents
Braking force variation trend monitoring device and elevator lever drum brake Download PDFInfo
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- CN217708438U CN217708438U CN202222077518.8U CN202222077518U CN217708438U CN 217708438 U CN217708438 U CN 217708438U CN 202222077518 U CN202222077518 U CN 202222077518U CN 217708438 U CN217708438 U CN 217708438U
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- braking force
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Abstract
The utility model discloses a braking force variation trend monitoring device and an elevator lever drum brake, wherein the braking torque monitoring device comprises two plunger rods, two pressure sensors, a host and two data lines; the first ends of the two plunger rods are respectively connected with the two output ends of the brake; the second ends of the two plunger rods are respectively connected with the first ends of the two pressure sensors; the present application places the pressure sensor between the adjusting bolt and the plunger rod so that it is subjected to little or no pressure from the compression spring because of its unique mounting location; the service life of the sensor can be prolonged, and the accuracy of the sensor is ensured; the elevator brake is normal close formula stopper, and during the installation of this application, only need not hard up adjusting bolt, place pressure sensor again between adjusting bolt and plunger rod, then screw adjusting bolt again can, the stopper still is in the brake state in whole installation, and the elevator also is in the safe state, therefore whole installation is comparatively convenient and safe.
Description
Technical Field
The utility model relates to an elevator technical field especially relates to a braking force trend monitoring devices and elevator lever drum brake.
Background
The braking system is one of the most critical safety protection devices of the elevator driving host machine and even the whole elevator system, the threat of the failure of the braking system to the operation safety of the elevator is great, and the braking system is a direct factor of the occurrence of shearing and extrusion damage. It is also very difficult to protect the danger caused by the failure of the braking system by means of other safety components (the up overspeed protection and the safety gear are in turn only possible to protect at car speeds exceeding 115% of the nominal speed, and a considerable part of the mechanical actuators of the up overspeed protection and the protection against accidental movement of the elevator are brakes). Therefore, whether the braking system is reliable or not is a concern for the safety of the entire elevator system and the user.
Whether the elevator braking system is reliable or not, the braking torque of the brake is a very important factor. According to the requirements in connection with elevators, it is necessary that the braking torque of the elevator brake should be sufficient for stopping the elevator brake of several types of elevator cars running at nominal speed and carrying a nominal load of 125%, which is relatively high in view of the type of brake in use of the elevator.
The compression spring on the elevator brake is the source of the braking force provided. The spring can be tired after long-term and frequent use, which causes the brake force to be reduced and influences the brake performance of the elevator. Therefore, the monitoring device is required to detect the braking torque of the spring.
In the prior art, a braking force variation trend monitoring device is also arranged in an elevator lever drum brake; but has the following disadvantages:
1. the elevator brake is a normally closed brake, and the sensor is installed at other positions (such as the end of a compression spring, the hinge point of a brake block and the like) so that the sensor is always in a pressed state and is easy to fatigue and damage, the service life of the sensor is shortened, and the accuracy of the sensor is reduced;
2. in the prior art, the installation of the sensor needs to perform operations such as punching or welding at the pull rod, the brake block and the like, or the pull rod and the brake block which have unique structures and can adapt to the shape of the sensor are prepared, so that the installation cost is overhigh or is complicated;
3. the sensor is arranged at a pull rod or a brake block in the prior art, during installation, the brake is generally required to be loosened, so that the brake is in a non-braking state, the safety of the elevator cannot be effectively guaranteed, safety risks are possessed, and the installation is complicated.
Therefore, it is necessary to develop a braking force variation tendency monitoring device and an elevator lever drum brake to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that the braking force variation trend monitoring device and the elevator lever drum brake are designed.
The utility model discloses a following technical scheme realizes above-mentioned purpose:
braking force trend monitoring device includes:
two plunger rods; the first ends of the two plunger rods are respectively connected with the two output ends of the brake;
two pressure sensors; the second ends of the two plunger rods are respectively connected with the first ends of the two pressure sensors; the second ends of the two pressure sensors are respectively connected with the heads of the two adjusting bolts;
a host;
two data lines; the two pressure sensors are respectively connected with the two hosts through two data lines.
Preferably, both pressure sensors, both plunger rods are arranged coaxially.
An elevator lever drum brake comprising:
a braking force variation trend monitoring device;
two adjusting bolts;
a brake; two output ends of the brake are respectively connected with two plunger rods of the braking force variation trend monitoring device;
two brake arms; the upper end of the brake arm is horizontally provided with a first through hole;
two mounting brackets; the two mounting frames are respectively arranged at the upper ends of the two brake arms, screw holes are horizontally arranged in the mounting frames, and the adjusting bolts are rotatably arranged in the screw holes;
a pull rod; the pull rod penetrates through the first through holes in the two brake arms;
two compression springs; the two compression springs are respectively sleeved on the pull rod and are arranged on the outer sides of the two brake arms, the first ends of the compression springs are connected with the end part of the pull rod, and the second ends of the compression springs are tightly connected with the brake arms;
a support; the lower ends of the two brake arms are rotatably connected with the support;
two brake pads; the brake block is arranged in the middle of the brake arm;
two brake wheels; the brake wheel is arranged on the brake block.
Further, the elevator lever drum brake also comprises a connecting frame, the connecting frame is installed at the upper end of the support, and the brake is installed on the connecting frame.
Furthermore, a second through hole is horizontally formed in the connecting frame, and the pull rod penetrates through the second through hole.
Furthermore, limiting plates are arranged at two ends of the pull rod, and the first end of the compression spring is connected with the limiting plates in a propping and tightening mode.
The beneficial effects of the utility model reside in that:
the present application places the pressure sensor between the adjusting bolt and the plunger rod so that it is subjected to little or no pressure from the compression spring because of its unique mounting location; the service life of the sensor can be prolonged, and the accuracy of the sensor is guaranteed.
During the installation of this application, only need not hard up adjusting bolt, place pressure sensor again between adjusting bolt and plunger rod, then screw adjusting bolt again can, the stopper still is in the brake state in whole installation, and the elevator is also in the safe state, therefore whole installation is comparatively convenient and safe.
Drawings
FIG. 1 is a first schematic view of the installation structure of the present application;
FIG. 2 is a schematic structural diagram of the present application;
FIG. 3 is a second schematic view of the installation structure of the present application;
FIG. 4 is a partial structure enlarged schematic view I of the present application;
FIG. 5 is an enlarged schematic view of a portion of the structure of the present application;
in the figure: 1-a brake; 2-a brake arm; 3-a brake block; 4-a brake wheel; 5-compression spring; 6-a pull rod; 7-adjusting the bolt; 8-a plunger rod; 9-a pressure sensor; 10-a host machine; 11-a data line; 14-support.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "inner", "outer", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are merely for convenience of description of the present invention and simplifying the description, but do not indicate or imply that the device or element that is referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed" and "connected" are to be interpreted broadly, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The following describes in detail embodiments of the present invention with reference to the accompanying drawings.
As shown in fig. 2, 4 and 5, the braking force variation tendency monitoring device includes:
two plunger rods 8; the first ends of the two plunger rods 8 are respectively connected with the two output ends of the brake 1;
two pressure sensors 9; the second ends of the two plunger rods 8 are respectively connected with the first ends of the two pressure sensors 9; the second ends of the two pressure sensors 9 are respectively connected with the heads of the two adjusting bolts 7; the connection is a butting connection and is not a fixed connection;
a host 10;
two data lines 11; the two pressure sensors 9 are connected to two hosts 10 through two data lines 11, respectively.
Preferably, both pressure sensors 9, both plunger rods 8 are arranged coaxially.
As shown in fig. 1 and 3, a lever drum brake for an elevator, includes:
a braking force variation trend monitoring device;
two adjusting bolts 7;
a brake 1; two output ends of the brake 1 are respectively connected with two plunger rods 8 of the braking force variation trend monitoring device;
two brake arms 2; the upper end of the brake arm 2 is horizontally provided with a first through hole;
two mounting brackets; the two mounting frames are respectively arranged at the upper ends of the two brake arms 2, screw holes are horizontally arranged in the mounting frames, and the adjusting bolts 7 are rotatably arranged in the screw holes;
a pull rod 6; the pull rod 6 is arranged by penetrating through the first through holes on the two brake arms 2;
two compression springs 5; the two compression springs 5 are respectively sleeved on the pull rod 6 and arranged at the outer sides of the two brake arms 2, the first ends of the compression springs 5 are connected with the end part of the pull rod 6, and the second ends of the compression springs 5 are tightly connected with the brake arms 2; the compression spring 5 is always in a compressed state no matter whether the elevator lever drum brake 1 works or not;
a support 14; the lower ends of the two brake arms 2 are rotatably connected with the support 14;
two brake pads 3; the brake block 3 is arranged in the middle of the brake arm 2;
two brake wheels 4; the brake wheel 4 is mounted on the brake shoe 3.
As shown in fig. 1 and 3, the lever drum type brake 1 for elevators further includes a coupling frame mounted on the upper end of the support 14, and the brake 1 is mounted on the coupling frame.
As shown in fig. 1 and 3, a second through hole is horizontally arranged on the connecting frame, and the pull rod 6 is arranged through the second through hole.
As shown in fig. 1 and 3, both ends of the pull rod 6 are provided with a limiting plate, and the first end of the compression spring 5 abuts against the limiting plate.
In some embodiments, two adjusting bolts 7 are symmetrically arranged; the two brake arms 2 are symmetrically arranged; the two mounting frames are symmetrically arranged; the two compression springs 5 are symmetrically arranged; the two brake blocks 3 are symmetrically arranged; the two brake wheels 4 are symmetrically arranged; all symmetries are the same axial lead.
In some embodiments, a locking nut is further sleeved on the adjusting bolt 7, and the locking nut and the pressure sensor 9 are respectively arranged on two sides of the mounting frame.
The working principle of the braking force variation trend monitoring device is as follows: the magnitude of the spring ejecting force F1 of the brake arm 2 is collected by the pressure sensor 9 and recorded. The magnitude and the variation trend of the opening force of the brake 1 can be obtained through recording for a period of time, and the variation trend of the braking force of the brake 1 is obtained through software analysis and calculation. The monitoring and recording of the braking force variation trend of the elevator brake 1 are beneficial to finding out the abnormal condition of the brake 1 and predicting the braking performance variation trend of the brake 1, provide quantitative data for the maintenance and repair of the brake 1, prejudge risks, prevent elevator accidents caused by insufficient braking force of the elevator and guarantee personal and property safety.
The installation mode of the braking force variation trend monitoring device is shown in fig. 4, a host 10 is installed on a connecting frame, data of pressure F1 monitored by a pressure sensor 9 is transmitted to the host 10 through a data line 11, the host 10 analyzes and calculates the received data to obtain the braking force F, and the braking force F is displayed in real time and recorded in a storage card; a pressure sensor 9 is mounted between the plunger rod 8 and the adjusting bolt 7. Thus, the monitoring device is installed on one side, and the method for installing the monitoring device on the other side is also installed. Because the elevator braking system needs two independent electric devices to realize, the braking force variation trend of the brake 1 of one elevator is monitored, and a pair of elevator lever drum type brake 1 braking force variation trend monitoring devices are needed to respectively and independently monitor the braking force variation trends of the brakes 1 at two sides.
The working principle of the elevator lever drum brake 1 is as follows:
when the elevator is in a braking state: the brake 1 does not work, the spring pushes the upper end of the brake arm 2 inwards under the action of the elastic force of the spring, the brake arm 2 pushes the brake block 3, and the traction sheave is braked by the friction force generated by the brake block 3 and the brake sheave 4, so that the aim of braking the elevator is fulfilled.
When the elevator is in a non-braking state: the brake 1 works, and the brake arm 2 is finally pushed to move outwards by overcoming the thrust of the compression spring through the plunger rod 8, the adjusting bolt 7 and the mounting rack; the brake arm 2 drives the brake block 3 outwards, so that a certain gap is formed between the brake block 3 and the brake wheel 4, and the traction sheave in a braking state is released, thereby achieving the purpose that the elevator can move freely.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. Braking force trend monitoring device, characterized by includes:
two plunger rods; the first ends of the two plunger rods are respectively connected with the two output ends of the brake;
two pressure sensors; the second ends of the two plunger rods are respectively connected with the first ends of the two pressure sensors; the second ends of the two pressure sensors are respectively connected with the heads of the two adjusting bolts;
a host;
two data lines; the two pressure sensors are respectively connected with the two hosts through two data lines.
2. The braking force trend monitoring device of claim 1, wherein the two pressure sensors and the two plunger rods are coaxially arranged.
3. Elevator lever drum brake, characterized by, includes:
the braking force trend monitoring device according to any one of claims 1 and 2;
two adjusting bolts;
a brake; two output ends of the brake are respectively connected with two plunger rods of the braking force variation trend monitoring device;
two brake arms; the upper end of the brake arm is horizontally provided with a first through hole;
two mounting brackets; the two mounting frames are respectively arranged at the upper ends of the two brake arms, screw holes are horizontally arranged in the mounting frames, and the adjusting bolts are rotatably arranged in the screw holes;
a pull rod; the pull rod penetrates through the first through holes in the two brake arms;
two compression springs; the two compression springs are respectively sleeved on the pull rod and arranged at the outer sides of the two brake arms, the first ends of the compression springs are connected with the end parts of the pull rod, and the second ends of the compression springs are tightly connected with the brake arms;
a support; the lower ends of the two brake arms are rotatably connected with the support;
two brake pads; the brake block is arranged in the middle of the brake arm;
two brake wheels; the brake wheel is mounted on the brake block.
4. The lever drum elevator brake according to claim 3, further comprising a connecting bracket mounted to an upper end of the pedestal, the brake being mounted to the connecting bracket.
5. The elevator lever drum brake of claim 4, wherein the link bracket has a second through hole horizontally disposed therein, and the tie rod is disposed through the second through hole.
6. The elevator lever drum brake of claim 3, wherein limiting plates are disposed at both ends of the pull rod, and the first end of the compression spring is in abutting connection with the limiting plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222077518.8U CN217708438U (en) | 2022-08-09 | 2022-08-09 | Braking force variation trend monitoring device and elevator lever drum brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222077518.8U CN217708438U (en) | 2022-08-09 | 2022-08-09 | Braking force variation trend monitoring device and elevator lever drum brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217708438U true CN217708438U (en) | 2022-11-01 |
Family
ID=83784668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222077518.8U Active CN217708438U (en) | 2022-08-09 | 2022-08-09 | Braking force variation trend monitoring device and elevator lever drum brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217708438U (en) |
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2022
- 2022-08-09 CN CN202222077518.8U patent/CN217708438U/en active Active
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| GR01 | Patent grant | ||
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| CP01 | Change in the name or title of a patent holder |
Address after: 610000 No. 255, Wulian 1st Road, Shuangliu District, Chengdu, Sichuan Patentee after: Chengdu Special Equipment Inspection and Testing Research Institute (Chengdu Special Equipment Emergency Response Center) Address before: 610000 No. 255, Wulian 1st Road, Shuangliu District, Chengdu, Sichuan Patentee before: Chengdu special equipment inspection and Testing Research Institute |